Geeze. Not even ET! http://www.theregister.co.uk/2010/12/02/nasa_alien_press/
"In fact NASA's findings are a little closer to home. The space boffins have found a bacterium living in an arsenic lake near California's Yosemite National Park. The finding is important because the bacterium uses arsenic in place of phosphorus - an element previously considered vital for all forms of life." Thrilling. We already knew about the Horta. <sigh> T
